Circuit closer



Dec. 28 1926. Y 1,612,486

R. A. BOREY CIRCUIT CLOSER Filed April 22. 1925 .47 Fifa-7K mummy Patented Dec. 28, 1926.

dUNITED STATES y 1,612,486 PATENT oFFlcE.

RENE A. BOREY, OF NEW ORLEANS, LOUISIANA.

CIRCUIT CLOSER.-

Application filed April 22. 1925.

pressed plunger, and wherein auxiliary spring;` will be provided to act directly against the plate for shitting said plate so that when the fuse melts, possibility of failn ure ot' movement of the plate will be reduced to a minimum.

And the invention seeks, as still a. further object, to provide a device which will be compact, etlicient, and capable of general application.

@ther and incidental objects will appear hereinafter.

ln the accompanying drawings:

Figure 1 is a top plan view of my improved circuit closer.

Figure 2 is a vertical sectional view on the line 2 2 of Figure 1, looking in the direction indicated by the arrows, and showing the bridge plate open.

Figure 3 is a vertical sectional view on the line 3 3 ofV Figure 1, looking in the direction indicated by the arrows, and showing the bridge plate in closed position.

Figure 4 is a detail perspective view showing one ot the contacts employed.

In carrying the invention into effect, I employ a preferably circular body plate which is formed medially with an upstanding socket 11 and fitting said socket is a collar 12 having an annular base flange 13 resting flat against the body plate. The collar extends above the socket and resting upon the upper edge ot' said collar is a pair of oppositely disposed semi-'circular 'icontacts 14. 'from which extend angle-shaped tongues 15 terminating in lugs 16 resting against the upper tace of the flange 13 of the collar. The collar 12 is formed ot' suitable insulating material so that the collar thus serves to insulate the contacts with respect to each other, and extending through the hase 'flange 13 of the collar and through the lugs 16 are terminals 17 connecting the contacts with the collar.

Fixed to the lower side of the body plate 10 is a spider including a top ring 18 surrounding a centering shoulder 19 on said Serial No. 25.101.

plate, and depending `Afrom said ring are spider arms 20 connected at their lower endsl by a sleeve 21 axially alined with the socket 11. Extending through the base flange 13 of the collar 12 and through the body plate l() are cap screws 22 which, as shown in Figure 2, are screwed into the ring 18 for connecting the collar and spider with the said body plate, and adjustable through the sleeve 21 of the spider is an abutment screw Slidable in the socket- 11 of the plate l() is a plunger 24 having' a reduced stem 25 slidable through the upper end wall oit' the socket, and surrounding said stein is a spring' 26 bearing against the upper end ol the plunger for forcing the plunger downwardly toward the abutment screw 23. Mounted upon the upper end of the plunger stein 25 is a circular bridge plate 27 connected with said stein by a cap screw 2S and extending freely through the bridge plate` near the periphery thereof, is a plurality ot spaced upstanding guide posts 29 for Isaid plate. As shown in Figure 2, the guide posts are provided at their lower ends with studs 30 screwed into the flange 13 ot the collar12 Vtor connecting the posts with said flange, and screwed upon the upper ends of the posts are collars 31 secured by set screws 32. Surrounding the upper end portions of the posts are springs 33 bearing between the collars 31 and the plate 27 for Inessing the plate downwardly.

In use, circuit wires, as indicated at 34, are connected to the terminals 17 while a suitable fuse, as indicated at 35, is interposed between the reduced ends of the screw 23 and plunger 2-1 for maintaining the plunger eleva-ted, so that, as shown in Figure 2, the bridge plate 27 is supported in open circuit position away from the contacts 14 while the springs 26 and are compressed. Accordingly, when the fuse is melted, the plunger 2-'1 will, as shown in Figure 3, be shifted downwardly by the spring 26 while the springs 33 will act on the plate 27 so that said plate will be moved to closed position resting on the contacts 14 to close a circuit therethrough. The spring 26 is, of course.l of sufficient strength to eifeet the shifting of the plunger and the closing of the bridge plate but the auxiliary springs 35 are provided to act directly against the plate in order that should the spring 26 fail, the plunger will, nevertheless, be shifted and the Cil bridge plate moved to closed position. Furthermore, it is to be noted that by adjusting the screw 23, the elevation of the plunger, andr consequently, the elevation of the plate 27 with respect to the contacts 14, may be varied.

Having thus described the invention, what I claim is: f

l. A circuit closer including a body plate, a spring pressed plunger carried thereby and having a bridge plate, spaced contacts at one side of the body plate for engagement by said bridge plate, a spider at the opposite side of the body plate, an abutment element carried by said spider and adjustable towards and away from said plunger, and a fuse interposed between said element and the plunger for normally maintaining the plunger retracted to support said bridge plate away from said contacts.

2. A circuit closer including a body plate having a. socket, an insulating collar surrounding said socket, spaced contacts mount-- ed on said collar, a spring pressed plunger slidable in the socket and provided with a bridge plate to engage said contacts, a mounting at the opposite side of said body plate, an abutment carried by said mounting in spaced relation to ,said plunger and adjustable towards and away from the plunger, and a fuse fitted between said plunger and abutment and normally holding the plunger retracted to support the bridge plat-e away from the contacts.v

3. A circuit closer including a body plate having an upstanding socket, an insulating collar surrounding said socket, spaced contacts overlying the upper end edge of said collar, a spring pressed plunger slidable in said socketand having an upstanding stem extending through the socket, a bridge plate carried by said stem, the plunger being movable for shifting said plate into engagement with said contacts, and mounting at the opposite side of said body plate, an abutment carried by said mounting and adjustable towards and away from said plunger, and a fuse fitted between the plunger and abutment for normally maintaining the plunger retracted to support the bridge plate away from the contacts.

t. A circuit closer including a body plate having an upstanding socket, an insulating collar surrounding the socketl and having a base flange resting upon said plate at one side thereof, a spider at the opposite side of said plate, means extending through said flange and the plate and engaged with the spider for connecting the collar and spider with the body plate, spaced contacts overlying the upper end edge of said collar, a plunger slidable in said socket and having a stem extending through the socket, a bridge plate, carried by said stem, a spring surrounding the plunger stem within the socket for shifting the plunger and moving` the bridge plat-e into engagement with said contacts, guide posts fixed to the said base flange and extending freely through the bridge plate, auxiliary springs carried by said posts to bear against the bridge plate for shifting said plate into engagement with the contacts, an abutment screw carried by the spider, and a fuse interposed between said screw and the plunger for normally maintaining the yplunger retracted to support the bridge plate away from said contacts.

In testimony whereof I afliX my signature.

RENE A. BOREY. [1.. si] 

